APA (7 ম সংস্করণ) উদ্ধৃতি

COVEY STEPHEN R. (1990). 7 HABITS OF HIGHLY EFFECTIVE PEOPLE: POWERFUL LESSONS IN PERSONAL CHANGE. FIRESIDE BOOK.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

COVEY STEPHEN R. 7 HABITS OF HIGHLY EFFECTIVE PEOPLE: POWERFUL LESSONS IN PERSONAL CHANGE. LONDON: FIRESIDE BOOK, 1990.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

COVEY STEPHEN R. 7 HABITS OF HIGHLY EFFECTIVE PEOPLE: POWERFUL LESSONS IN PERSONAL CHANGE. FIRESIDE BOOK, 1990.